题目内容

可燃气体与空气混合是的爆炸范围越宽,则危险程度越()。

A. 低
B. 高
C. 不受限制
D. 没有影响

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分组交换方式提供两种服务,分别是()和数据报业务服务。

终端根据主站设置的事件属性按照重要事件和普通事件实现分类记录。

A. 正确
B. 错误

加固货物时,所用绳索或加固线捆绑挂结后的余尾部分,长度一般不短于()。

A. 50mm
B. 100mm
C. 120mm
D. 150mm

Which statement about using RMAN stored scripts is true?()

A. To create and execute an RMAN stored script,you must use a recovery catalog.
B. When executing a stored script and a command fails,the remainder of the script is executed,and a message is written to the alert log file.
C. RMAN stored scripts can always be executed against any target database that is registered in the recovery catalog.
D. When you execute a stored script,it always executes using the persistent channel settings previously set with the CONFIGURE command.

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